Liquid filling machines are mainly classified by filling principle into atmospheric pressure filling machines, pressure filling machines, and vacuum filling machines.
Atmospheric pressure filling machines use the liquid's own weight to fill containers under atmospheric pressure. They are further divided into timed filling and volumetric filling types, and are suitable for low-viscosity, gas-free liquids such as milk and wine.
Pressure filling machines operate at pressures higher than atmospheric pressure and are divided into isobaric filling and differential pressure filling. In isobaric filling, the pressure in the liquid storage tank is equal to the pressure inside the bottle, and the liquid flows into the bottle by its own weight. In differential pressure filling, the pressure in the storage tank is higher than that in the bottle, so the liquid flows in due to the pressure difference. Pressure filling machines are suitable for gas-containing liquids such as beer, carbonated drinks, and champagne.
Vacuum filling machines perform filling when the pressure inside the bottle is lower than atmospheric pressure. This type of equipment is mainly used for liquids with specific vacuum filling requirements.
Liquid packaging machines are used to package liquid products, including beverage filling machines, dairy filling machines, viscous liquid food packaging machines, and packaging machines for liquid cleaning products and personal care products.
Because liquid products vary widely, liquid packaging machines are available in many types and forms. In particular, equipment used for packaging liquid food must meet extremely high requirements for sterility, hygiene, and safety. For non-standard structural components in the above equipment, such as filling valve bodies, seals, liquid storage tank connecting flanges, and container positioning parts, Hansheng Automation provides custom machining services based on customer drawings to accommodate different filling principles and hygiene grade requirements.
